Roscoe is a hamlet (and census-designated place) in Sullivan County, New York, United States.

Roscoe is in the southwest part of the town of Rockland, adjacent to New York State Route 17.

The town is a destination for fly-fishing enthusiasts because of its location at the intersection of two rivers popular for trout fishing (the Beaver Kill and the Willowemoc Creek).

[4] During the construction of New York State Route 17 (Southern Tier Expressway), the section near Roscoe was one of the last to be completed, requiring travelers to exit onto the local truck roads for several miles.

The Roscoe Diner is a popular spot both for students heading to and from colleges in New York State[5] and for flyfishermen[6] as well as locals.

[5] The Dundas Castle and Roscoe Presbyterian Church and Westfield Flats Cemetery are listed on the National Register of Historic Places.

[8] According to the United States Census Bureau, the CDP has a total area of 0.7 square miles (1.8 km2), all land.

Roscoe is just inside the boundary of the Catskill Park and is at the junction of Beaver Kill and Willowemoc Creek.